| abstract |
Compounds of formula (I) n nand pharmaceutically acceptable salts thereof, wherein R 1 , R 2 , R 3 , R 4 , L 1 and G 1 are as defined in the specification, are useful in treating conditions or disorders prevented by or ameliorated by positive allosteric modulation of the γ-aminobutyric acid B (GABA-B) receptor. Methods for making the compounds are described. Also described are pharmaceutical compositions of compounds of formula (I), and methods for using such compounds and compositions. |